Construction and development companies praying for an economic recovery next year have something else to worry about: pending new EPA regulations regarding stormwater discharges from construction activities – and claims from environmental groups that EPA’s proposal isn’t stringent enough.

EPA issued a proposal on November 28, 2008. That proposal is complex, but the aspect of it that has received the most attention is the requirement that certain construction sites greater than 30 acres meet numerical turbidity limits (specifically, 13 nephelometric turbidity units (NTUs), which I had to include in this post just because it sounds so cool). Developers have opposed the numeric limits; the National Association of Home Builders estimates that the cost to comply would be $15,000 to $45,000 per acre.

On the other hand, the NRDC and Waterkeeper Alliance have threatened to sue EPA if EPA does not revise the propose rule to include post-construction controls as part of the rule. EPA has stated that it is not planning to do so. It’s not obvious that NRDC and Waterkeeper Alliance have the better of this specific debate, but the argument regarding post-construction controls is similar to the ongoing discussion in Massachusetts and elsewhere regarding the need for ongoing stormwater controls at properties other than industrial facilities that are already regulated.

The issue is not going to go away. EPA is under a deadline to issue the rule by December 1, 2009.

American College of Environmental Lawyers, The ACOEL, is a professionalassociation of lawyers distinguished by experience and high standards in the practice of environmental law, ethics, and the development of environmental law.